Full-automatic plug cover putting-on device

Abstract

The application discloses a full-automatic upper cover device for plug safety cover and belongs to the technical field of plug production, which comprises a mounting rack, an automatic feeding mechanical arm for adsorbing the safety cover and a vibrating feeding disc for feeding the safety cover are arranged on the side of the mounting rack, a placing groove for placing the plug is arranged on the top of the mounting rack, a fixed limiting mechanism for limiting the plug is arranged in the mounting rack, a first detection mechanism and a second detection mechanism for installing and detecting the safety cover are arranged on the top of the mounting rack, and the first detection mechanism and the second detection mechanism are symmetrically arranged on the sides of the two ends of the placing groove. The application can cover all kinds of adverse problems of safety cover assembly, solve the industry pain points of single quality control, process control loss and insufficient final inspection accuracy of traditional equipment, effectively reduce the product failure rate and rework cost, and guarantee the consistency, sealing property and use safety of plug safety cover assembly.

Description

Technical Field

[0001] This invention relates to the field of electrical plug manufacturing technology, and in particular to a fully automatic plug safety cover application device. Background Technology

[0002] As a fundamental core component in the field of electrical connections, plugs are widely used in various electronic appliances, industrial control equipment, and civil power supply scenarios. The safety cover is a crucial protective accessory for plugs, primarily used to seal the plug's mating surface and protect the internal conductive structure, effectively preventing safety hazards such as dust intrusion, short circuits, and accidental contact leading to leakage. It directly determines the safety, stability, and lifespan of the plug product. Therefore, the precision of the pressure fitting, the tightness of the seal, and the consistency of the assembly between the safety cover and the plug are core quality control indicators in the plug manufacturing process.

[0003] Currently, most plug and fuse cover assembly equipment and traditional assembly processes on the market rely on a relatively simple quality control model. They generally depend solely on manual sampling or a single post-assembly inspection for quality verification, lacking a precise, phased, and comprehensive control mechanism. In actual pressing and assembly operations, defects such as incomplete pressing, insufficient or insufficient pressing, assembly misalignment, end face warping, unilateral lifting, corner folding, and exposed assembly gaps are prone to occur. Furthermore, traditional processes cannot monitor the dynamic data of the pressing process in real time; they can only detect batch defects after assembly is complete, failing to predict and avoid potential assembly problems. This not only leads to a high product defect rate and a large workload for rework and sorting but also results in material waste, reduced production efficiency, and difficulty in ensuring the dimensional consistency and quality stability of batch products.

[0004] Existing assembly and inspection technologies have significant shortcomings, with a particular focus on the lack of process control and insufficient final inspection accuracy: On the one hand, traditional equipment lacks dynamic process detection function. There is no real-time collection and judgment of stroke and displacement data throughout the entire pressing process of the safety cover. The pressing speed and pressing stroke cannot be accurately controlled, which makes it easy to have hidden assembly defects such as not pressing tightly or not meeting the pressing stroke standard. These defects are highly concealed and difficult to identify with the naked eye. They are very likely to flow into subsequent processes and the end market, creating potential electrical safety hazards. On the other hand, traditional post-inspection relies heavily on manual visual screening and simple measuring tools, resulting in low detection accuracy and strong subjectivity. It is difficult to accurately calculate the assembly height difference between the safety cover and the plug, and it is also difficult to fully identify minor defects such as local bulges, micro gaps, and slight warping. The detection miss rate and false judgment rate are relatively high, which cannot meet the needs of large-scale and standardized production of high-quality plug products. Summary of the Invention

[0005] This invention provides a fully automatic plug safety cover mounting device to solve the aforementioned technical problems.

[0006] The present invention adopts the following technical solution: a fully automatic plug safety cover mounting device, including a mounting frame; an automatic feeding robotic arm for adsorbing the safety cover and a vibrating feeding plate for feeding the safety cover are provided on the side of the mounting frame; a placement slot for placing the plug is provided on the top of the mounting frame; a fixing limiting mechanism for limiting the plug is provided inside the mounting frame, and the fixing limiting mechanism is slidably engaged with the mounting frame; a first detection mechanism and a second detection mechanism for installing and detecting the safety cover are provided on the top of the mounting frame, and the first detection mechanism and the second detection mechanism are symmetrically arranged on both sides of the placement slot.

[0007] Furthermore, the fixed limiting mechanism includes a fixed motor, a fixed wheel, a fixed plate, a fixed shaft, two slide rods, two connecting springs, and three fixed rods. The two slide rods are symmetrically arranged inside the mounting frame. The fixed plate is horizontally slidably connected inside the mounting frame, and the fixed plate is slidably engaged with the two slide rods. The two connecting springs are respectively sleeved on the two slide rods, and their two ends are respectively connected between the slide rods and the fixed plate. The fixed motor is located inside the mounting frame. The fixed wheel is eccentrically connected to the main shaft of the fixed motor. The fixed wheel has an arc-shaped groove. The fixed shaft is vertically arranged in the arc-shaped groove, and the arc-shaped groove is slidably engaged with the fixed shaft. The fixed wheel is slidably engaged with the fixed plate, thereby driving the fixed plate to slide on the two slide rods. The three fixed rods are horizontally arranged on the fixed plate, and the fixed rods are slidably engaged with the mounting frame.

[0008] Furthermore, the bottom of the placement slot is provided with a plug slot for inserting three pins of the plug, and the three plug slots correspond to three fixing rods respectively.

[0009] Furthermore, the first detection mechanism includes a detection frame, a drive motor, a drive screw shaft, a drive slider, a bracket, and a displacement sensor. The detection frame is vertically arranged on the side of the mounting frame and has a sliding groove. The drive screw shaft is vertically rotatably connected to the detection frame. The drive motor is located at the top of the detection frame and is drivenly connected to the top of the drive screw shaft. The drive slider is slidably connected in the sliding groove and is threadedly connected to the drive screw shaft. The bracket is arranged on the side wall of the drive slider, and the displacement sensor is mounted on the bracket and faces the placement groove.

[0010] Furthermore, the second testing mechanism includes a testing moving component, a testing pressing component, and a flatness testing component. The testing moving component is disposed on the top of the mounting frame, and the testing pressing component is disposed on the testing moving component. The testing pressing component and the testing moving component are slidably coupled. The flatness testing component is disposed at the bottom of the testing pressing component. The testing moving component can move the flatness testing component to the position of the placement slot.

[0011] Furthermore, the detection moving component includes a moving plate and two synchronous lead screw slides. The two synchronous lead screw slides are symmetrically arranged on the top of the mounting frame. The two ends of the moving plate are respectively connected to the moving ends of the two synchronous lead screw slides. A lifting groove is provided at the middle position of the moving plate, and a sliding groove is provided at the top of the moving plate.

[0012] Furthermore, the detection pressing assembly includes a drive cylinder, a sliding block, a sliding plate, a lifting plate, a pressing plate, and two drive wheels. The sliding block has movable sliders on both sides and is slidably connected to a sliding groove via the two movable sliders. The drive cylinder is horizontally positioned at the top of the moving plate, and its extension / retraction end is connected to the sliding block. The sliding plate is vertically positioned at the bottom of the sliding block and has two symmetrically arranged inclined grooves. The two drive wheels are symmetrically arranged on the lifting plate, and slide within the two inclined grooves respectively. The pressing plate is horizontally positioned at the bottom of the lifting plate and has four rectangularly distributed sliding rods that slide vertically with the moving plate. The bottom of the pressing plate has two spaced-apart placement grooves.

[0013] Furthermore, two flatness detection components are provided, and the two flatness detection components are respectively arranged in two placement slots; each flatness detection component includes a mounting frame, a detection wheel, four mounting rods and four support plates. The four mounting rods are rectangularly distributed inside the placement slot, and the four support plates are arranged on the mounting frame. The four support plates are slidably engaged with the four mounting rods. The bottom of the support plates and mounting rods is provided with a return spring. The detection wheel is rotatably connected to the mounting frame, and the support plates are provided with a jump sensor.

[0014] Furthermore, the side wall of the mounting frame is equipped with a photoelectric detection device for the flatness of the grid end face with the detection end facing downward.

[0015] Furthermore, the automatic feeding robotic arm is equipped with a vacuum adsorption plate for adsorbing the safety cover.

[0016] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: Firstly, this invention employs a structural design where a first and a second inspection mechanism are symmetrically arranged at both ends of the placement slot, forming a dual-layer quality control system of dynamic process monitoring and precise finished product inspection. The first inspection mechanism focuses on dynamic monitoring of displacement and stroke data during assembly to predict hidden pressing defects; the second inspection mechanism focuses on detecting end-face flatness, fitting gaps, and appearance deformation after assembly to identify visible minor defects. The two mechanisms work synergistically to comprehensively cover various defects in the assembly of the safety cover, thoroughly solving the industry pain points of traditional equipment's single quality control, lack of process control, and insufficient final inspection accuracy. This effectively reduces product defect rates and rework costs, ensuring the consistency, sealing performance, and safety of the plug and safety cover assembly.

[0017] Secondly, the horizontally arranged drive cylinder of this invention drives the sliding block to slide horizontally along the sliding groove of the moving plate. The sliding plate at the bottom of the sliding block moves synchronously. Through the symmetrical inclined groove on the sliding plate and the oblique sliding cooperation of the drive wheel on the lifting plate, the horizontal sliding motion is converted into the vertical downward motion of the lifting plate, which drives the bottom pressing plate to press down smoothly. First, it can accurately move the detection wheel of the bottom flatness detection component to the assembly end face position of the plug and the safety cover, so as to achieve accurate alignment of the detection point. Second, it has a secondary precise pressing and correction function. Through the precise and controllable pressing stroke of the pressing plate, the safety cover can be forcibly corrected and precisely pressed, and the safety cover can be precisely pressed into the standard assembly position of the plug, effectively correcting the previous assembly deviation. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the mounting frame in this invention; Figure 4 This is a three-dimensional structural diagram of the fixed limiting mechanism in this invention; Figure 5 This is a three-dimensional structural diagram of the first detection mechanism in this invention; Figure 6 This is a three-dimensional structural diagram of the second detection mechanism in this invention; Figure 7 This is a three-dimensional structural diagram of the pressing and bonding detection component in this invention. Figure 1 ; Figure 8 This is a three-dimensional structural diagram of the pressing and bonding detection component in this invention. Figure 2 ; Figure 9 This is a partial three-dimensional structural diagram of the pressing and sealing component in this invention; Figure 10 This is a three-dimensional structural diagram of the flatness detection component in this invention; Figure 11 for Figure 10 Enlarged view of point A in the middle; Figure 12 This is a schematic diagram of the assembly of the plug and the safety cover.

[0019] Figure Labels Mounting frame 1, placement slot 11, insertion slot 12, automatic feeding robotic arm 2, vacuum suction plate 21, vibrating feeding plate 3, fixed limiting mechanism 4, fixed motor 41, fixed wheel 42, fixed plate 43, fixed shaft 44, slide bar 45, connecting spring 46, fixed rod 47, arc groove 48, first detection mechanism 5, detection frame base 51, drive motor 52, drive lead screw shaft 53, drive slider 54, bracket 55, displacement sensor 56, slide groove 57, second detection mechanism 6, detection moving component 60, moving plate 600. Synchronous lead screw slide 601, sliding groove 602, detection and pressing assembly 61, drive cylinder 610, sliding block 611, sliding plate 612, lifting plate 613, pressing plate 614, drive wheel 615, moving slider 616, inclined groove 617, sliding rod 618, placement groove 619, flatness detection assembly 62, mounting frame 620, detection wheel 621, mounting rod 622, support plate 623, return spring 624, runout sensor 625, grid end face flatness photoelectric detection device 626; plug 7, safety cover 8, pin 9. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] The following is in conjunction with the appendix Figure 1-12 The technical solutions provided by the various embodiments of the present invention are described in detail below.

[0022] This invention provides a fully automatic plug safety cover mounting device, including a mounting frame 1; an automatic feeding robotic arm 2 for adsorbing the safety cover 8 and a vibrating feeding plate 3 for feeding the safety cover 8 are provided on the side of the mounting frame 1; a placement groove 11 for placing the plug 7 is provided on the top of the mounting frame 1; a fixing limiting mechanism 4 for limiting the position of the plug 7 is provided inside the mounting frame 1, and the fixing limiting mechanism 4 is slidably engaged with the mounting frame 1; a first detection mechanism 5 and a second detection mechanism 6 for installing and detecting the safety cover 8 are provided on the top of the mounting frame 1, and the first detection mechanism 5 and the second detection mechanism 6 are symmetrically arranged on both sides of the placement groove 11.

[0023] A plug suction robotic arm (not shown in the figure) for suctioning and feeding the plug 7 is provided on the side of the mounting frame 1.

[0024] When the equipment is running, the plug adsorption robotic arm first automatically picks up and transfers the plug 7 to be processed by adsorption, and accurately places the plug 7 into the placement slot 11 on the top of the mounting frame 1. At the same time, the vibrating feeding plate 3 completes the orderly sorting and directional feeding of the safety cover 8, and works with the automatic feeding robot arm 2 to achieve precise adsorption and transfer of the safety cover 8. After the plug 7 is in place, the fixed limiting mechanism 4 inside the mounting frame 1 completes the rigid positioning and locking of the plug 7, preventing the plug 7 from shifting or shaking during the assembly process. After the workpiece is positioned, the corresponding loading robot arm will precisely align the safety cover 8 with the assembly position of the plug 7 to complete the pressing and assembly operation. Finally, the first inspection mechanism 5 and the second inspection mechanism 6, which are symmetrically arranged at both ends of the placement slot 11, complete the comprehensive inspection of the assembly quality of the safety cover 8 from multiple dimensions such as assembly stroke displacement, end face flatness, assembly fit, and corner fit, so as to realize the fully automated operation of the plug 7, safety cover 8 feeding, assembly, limiting and inspection.

[0025] In a preferred embodiment, a pressure sensor may be added to the fixed limiting mechanism 4 to detect the clamping force of the three fixing rods 47 on the plug pins 9 in real time; when the displacement sensor 56 of the first detection mechanism 5 detects that the pressing depth of the safety cover 8 is insufficient or the pressing speed is abnormal, the control system adjusts the speed and direction of the fixed motor 41 in real time according to the detection signal of the displacement sensor 56, and applies a compensating fine adjustment force to the plug 7 through the fixing rods 47 to correct the slight displacement of the plug 7 during the assembly process and ensure that the pressing stroke meets the standard.

[0026] In addition, after the displacement sensor 56 of the first detection mechanism 5 detects the pressure stroke data of the safety cover 8, it transmits the data to the data fusion module of the control system. The data fusion module performs multi-source data fusion analysis on the pressure stroke data of the displacement sensor 56, the runout data of the runout sensor 625, and the end face scanning data of the grid end face flatness photoelectric detection device 626: if the pressure stroke data meets the standard but the runout data exceeds the standard, it is determined that the pressing is not solid and needs to be repressed; if both the pressure stroke data and the runout data meet the standard but the photoelectric detection data shows a micro gap, it is determined that the edge of the safety cover 8 is warped; the control system automatically executes different subsequent processes according to the above judgment results - if it is determined that the pressing is not solid, it controls the detection pressing component 61 to perform a second pressing; if it is determined that the edge is warped, it issues an alarm signal and marks it as a defective product. Even better, the data fusion module of the control system has a built-in standard assembly feature library, which includes standard pressing stroke range, standard end face runout range, and standard photoelectric scanning feature curve. The data fusion module compares the three types of detection data collected in real time with the feature library to generate a multi-dimensional judgment matrix, realizes multi-dimensional collaborative judgment of assembly quality grading assessment, and divides the product into three levels: "qualified", "minor defects that can be repaired by secondary pressing", and "serious defects that need to be scrapped".

[0027] Specifically, the fixed limiting mechanism 4 includes a fixed motor 41, a fixed rotating wheel 42, a fixed plate 43, a fixed shaft 44, two sliding rods 45, two connecting springs 46, and three fixed rods 47. The two sliding rods 45 are symmetrically arranged inside the mounting frame 1. The fixed plate 43 is horizontally slidably connected inside the mounting frame 1, and the fixed plate 43 is slidably engaged with the two sliding rods 45. The two connecting springs 46 are respectively sleeved on the two sliding rods 45, and the two ends of the connecting springs 46 are respectively connected to the sliding rods 45 and the fixed plate 43. Between them, the fixed motor 41 is located inside the mounting frame 1, the fixed wheel 42 is eccentrically connected to the main shaft of the fixed motor 41, the fixed wheel 42 is provided with an arc groove 48, the fixed shaft 44 is vertically arranged in the arc groove 48 and the arc groove 48 is slidably engaged with the fixed shaft 44, the fixed wheel 42 is slidably engaged with the fixed plate 43 so as to drive the fixed plate 43 to slide on the two slide rods 45, and the three fixed rods 47 are horizontally arranged on the fixed plate 43, and the fixed rods 47 are slidably engaged with the mounting frame 1.

[0028] After the equipment is started, the fixed motor 41 drives the fixed wheel 42 to rotate continuously. The fixed wheel 42 adopts an eccentric structure design, and its internal arc groove 48 slides with the fixed shaft 44, converting the rotational motion of the fixed motor 41 into the horizontal linear reciprocating sliding motion of the fixed plate 43.

[0029] The fixing plate 43 is sleeved on two symmetrically distributed slide rods 45 and can slide smoothly along the slide rods 45. The connecting spring 46 sleeved on the slide rods 45 provides elastic restoring force and buffer limiting function for the fixing plate 43.

[0030] The three fixing rods 47, which are horizontally fixed on the fixing plate 43, move synchronously with the fixing plate 43 and correspond to the position of the through-hole 12 to precisely tighten and limit the three pins 9 of the plug 7 in the placement slot 11.

[0031] Before assembly, the fixed motor 41 drives the fixed wheel 42 to rotate, pushing the fixed plate 43 to slide forward, which in turn drives the three fixed rods 47 to press against the pins 9 of the plug 7, thus achieving rigid fixation of the plug 7 and preventing displacement, shaking, or offset of the plug 7 during assembly. After assembly, the fixed motor 41 reverses, and with the elastic reset action of the connecting spring 46, it drives the fixed plate 43 and the fixed rod 47 to retract, releasing the limit of the plug 7 and facilitating the unloading of the finished product.

[0032] Meanwhile, the buffering characteristics of the connecting spring 46 can prevent deformation of the plug pin 7 pin 9 and damage to the housing caused by rigid clamping, thus achieving flexible and precise limiting.

[0033] This embodiment solves the problem that traditional assembly equipment lacks a dedicated limiting structure, making the plug 7 prone to shaking and displacement during assembly, resulting in the safety cover 8 being misaligned and having uneven gaps. By precisely limiting the three rods corresponding to the pins 9, the plug 7 is fixed in all directions, ensuring the accuracy of assembly alignment.

[0034] Specifically, the bottom of the placement slot 11 is provided with a plug slot 12 for the three pins 9 of the plug 7 to be inserted, and the three plug slots 12 correspond to the three fixing rods 47 respectively.

[0035] The placement slot 11 provides a dedicated placement and positioning station for the plug 7. The three insertion slots 12 at its bottom correspond one-to-one with the three pins 9 of the plug 7, and are precisely aligned with the three fixing rods 47 of the fixed limiting mechanism 4.

[0036] During operation, the plug 7 is placed inside the placement slot 11, and the three pins 9 of the plug 7 are precisely embedded in the insertion slot 12 to achieve the initial positioning of the plug 7 and limit the horizontal displacement and rotation of the plug 7. Subsequently, the fixing rod 47 passes through the insertion slot 12 and tightens the pins 9 to achieve a second precise locking limit. The initial positioning and rigid limit work together to form a double-layer positioning guarantee, providing the basic working conditions for the precise assembly of the safety cover 8.

[0037] Specifically, the first detection mechanism 5 includes a detection frame 51, a drive motor 52, a drive screw shaft 53, a drive slider 54, a bracket 55, and a displacement sensor 56. The detection frame 51 is vertically arranged beside the mounting frame 1. The detection frame 51 is provided with a sliding groove 57. The drive screw shaft 53 is vertically rotatably connected inside the detection frame 51. The drive motor 52 is located at the top of the detection frame 51 and is drivenly connected to the top of the drive screw shaft 53. The drive slider 54 is slidably connected inside the sliding groove 57, and the drive slider 54 is threadedly connected to the drive screw shaft 53. The bracket 55 is arranged on the side wall of the drive slider 54. The displacement sensor 56 is mounted on the bracket 55 and faces the placement groove 11. The displacement sensor 56 is model LK-H022.

[0038] During operation, the drive motor 52 starts the drive screw shaft 53 to rotate. The rotational motion is converted into the vertical linear motion of the drive slider 54 by the threaded transmission structure between the drive screw shaft 53 and the drive slider 54. The drive slider 54 moves smoothly up and down along the slide groove 57 of the detection frame 51, which drives the bracket 55 and the displacement sensor 56 mounted on it to move up and down synchronously. The displacement sensor 56 is always facing the assembly station of the placement slot 11. During the entire process of pressing down the safety cover 8 for assembly, it collects the pressing stroke and assembly height data of the safety cover 8 in real time, dynamically monitors the pressing speed and pressing depth, accurately records the displacement changes during the assembly process, and determines in real time whether there are hidden assembly defects such as incomplete pressing, under-pressurization, false pressing, and insufficient stroke, thus completing the dynamic quality control detection of the assembly process.

[0039] In this embodiment, dynamic data monitoring of the entire pressing process of the safety cover 8 is realized, replacing the traditional post-final inspection mode. It can predict hidden defects such as insufficient pressing stroke and incomplete pressing in real time, and prevent hidden defective products from flowing into the next process from the source, thus eliminating electrical safety hazards.

[0040] Specifically, the second testing mechanism 6 includes a testing moving component 60, a testing pressing component 61, and a flatness testing component 62. The testing moving component 60 is disposed on the top of the mounting frame 1, and the testing pressing component 61 is disposed on the testing moving component 60. The testing pressing component 61 and the testing moving component 60 are slidably engaged. The flatness testing component 62 is disposed at the bottom of the testing pressing component 61. The testing moving component 60 can move the flatness testing component 62 to the position of the placement groove 11.

[0041] In a preferred embodiment of this application, at least two elastic reset positioning pins are provided at the bottom of the placement groove 11, with the tops of the positioning pins abutting against the two sides of the plug 7 housing respectively. A pressure sensor is connected to the bottom of the positioning pin, which detects the contact pressure between the positioning pin and the plug 7 housing. When the displacement sensor 56 of the first detection mechanism 5 detects that the safety cover 8 is pressed down and deviated, the control system calculates the pressure difference between each pressure sensor and controls the fixed motor 41 to drive the fixed rod 47 to apply a vector force to the plug 7, adaptively returning the plug 7 from the deviated position to the correct assembly position. The tops of the three fixed rods 47 are respectively provided with an anti-slip textured structure, with a surface roughness Ra of 3.2μm~6.3μm, to enhance the frictional positioning effect on the plug pins 9. This embodiment significantly improves the positioning accuracy of the device by introducing a closed-loop alignment technology of "pressure difference feedback → vector force correction".

[0042] The second testing institution 6 is a component for precisely testing the flatness and fit of the end face of the safety cover 8 after assembly, forming a dual testing system of process and finished product with the first testing institution 5; The entire system consists of a detection moving component 60, a detection pressing component 61, and a flatness detection component 62 working together. The detection moving component 60 is responsible for driving the overall translation and alignment of the detection structure, and precisely moving the flatness detection component 62 above the assembly station of the plug 7. The detection pressing component 61 achieves precise downward pressing and bonding, providing a bonding benchmark for flatness detection. The flatness detection component 62 uses a combination of mechanical and photoelectric detection to comprehensively detect minor defects such as warping, local arching, micro-gaps, corner folding, and single-sided lifting on the end face of the safety cover 8.

[0043] By combining mechanical runout detection with photoelectric end-face detection, we can achieve full coverage detection of minute defects, significantly reduce the rate of missed and false detections, comprehensively improve the accuracy of finished product inspection, and ensure the fit, sealing and appearance consistency of product assembly.

[0044] Specifically, the detection moving component 60 includes a moving plate 600 and two synchronous lead screw slides 601. The two synchronous lead screw slides 601 are symmetrically arranged on the top of the mounting frame 1. The two ends of the moving plate 600 are respectively connected to the moving ends of the two synchronous lead screw slides 601. A lifting groove is provided at the middle position of the moving plate 600, and a sliding groove 602 is provided at the top of the moving plate 600.

[0045] During operation, the two sets of synchronous lead screw slides 601 are started synchronously to drive the moving end to move synchronously, which in turn drives the moving plate 600 to move horizontally as a whole. The detection pressing component 61 and flatness detection component 62 mounted on the bottom of the moving plate 600 are precisely moved to the assembly station above the placement slot 11 to detect the plug 7 and the safety cover 8.

[0046] The dual-screw slide table provides synchronous drive, ensuring smooth movement and high alignment accuracy. This enables rapid and precise alignment of the detection components, avoiding detection data errors caused by detection offset.

[0047] Specifically, the detection and pressing assembly 61 includes a drive cylinder 610, a sliding block 611, a sliding plate 612, a lifting plate 613, a pressing plate 614, and two drive wheels 615. The sliding block 611 has movable sliders 616 on both sides, and the sliding block 611 is slidably connected to the sliding groove 602 via the two movable sliders 616. The drive cylinder 610 is horizontally positioned on top of the moving plate 600, and its extension / retraction end is connected to the sliding block 611. The sliding plate 612 is vertically positioned on the sliding block 611. At the bottom of 11, the sliding plate 612 is provided with two symmetrically arranged inclined grooves 617, and the two driving wheels 615 are symmetrically arranged on the lifting plate 613, and the two driving wheels 615 slide in the two inclined grooves 617 respectively. The pressing plate 614 is horizontally arranged at the bottom of the lifting plate 613. The pressing plate 614 is provided with four rectangularly distributed sliding rods 618. The sliding rods 618 slide up and down with the moving plate 600. The bottom of the pressing plate 614 is provided with two spaced-apart placement grooves 619.

[0048] During operation, the horizontally arranged drive cylinder 610 extends and retracts, causing the sliding block 611 to slide horizontally along the sliding groove 602 of the moving plate 600. The sliding plate 612 at the bottom of the sliding block 611 moves synchronously. Through the oblique sliding cooperation between the symmetrical inclined groove 617 on the sliding plate 612 and the drive wheel 615 on the lifting plate 613, the horizontal sliding motion is converted into the vertical downward motion of the lifting plate 613, which drives the bottom pressing plate 614 to press down smoothly. During the pressing process of the laminating plate 614: First, the detection wheel 621 of the bottom flatness detection component 62 can be accurately moved to the assembly end face position of the plug 7 and the safety cover 8, so as to achieve accurate alignment of the detection point and provide a precise work station foundation for the subsequent high-precision detection of the flatness and fit of the end face of the safety cover 8, avoiding the problems of missed detection and false detection caused by detection offset and inaccurate detection point. Secondly, it has a secondary precision pressing and correction function. In response to defects such as incomplete pressing, false pressing, slight deviation, and excessive gap in the fit of the safety cover 8 during the assembly process, the pressure plate 614 can precisely control the downward stroke to force and precisely press the safety cover 8 into the standard assembly position of the plug 7. This effectively corrects the previous assembly deviations, greatly reduces defects such as incomplete pressing and improper assembly, and significantly improves the assembly qualification rate and product assembly consistency.

[0049] The pressing plate 614 is connected to the moving plate 600 by four sliding rods 618 to ensure that the pressing process is vertical, stable and without deviation.

[0050] The placement groove 619 at the bottom of the pressing plate 614 is used to precisely mount the flatness detection component 62. After pressing down, the detection component is tightly fitted to the end face of the safety cover 8, completing the detection benchmark calibration and providing precise fitting conditions for subsequent flatness detection.

[0051] In a preferred embodiment, at least eight elastic pressure claws are evenly distributed on the bottom of the pressing plate 614. Each elastic pressure claw is independently slidably installed within the pressing plate 614, and an independently adjustable compression spring is provided between each elastic pressure claw and the pressing plate 614. The height of each elastic pressure claw can be adaptively adjusted according to the surface contour of the safety cover 8, so that each elastic pressure claw applies a uniform pressing force to the safety cover 8. A displacement scale is provided on the pressing plate 614 corresponding to the position of each elastic pressure claw to mark the compression stroke of each elastic pressure claw, so as to judge the surface flatness of the safety cover 8. Damping buffers are provided at the four corners of the pressing plate 614 to reduce the impact force at the moment of pressing and prevent the safety cover 8 from cracking due to excessive impact. The design of multi-point independent elastic pressure claws makes the pressing force more uniform and controllable, prevents local warping caused by uneven pressing, and enhances the consistency of assembly quality.

[0052] Specifically, two flatness detection components 62 are provided, and the two flatness detection components 62 are respectively arranged in two placement slots 619. Each flatness detection component 62 includes a mounting frame 620, a detection wheel 621, four mounting rods 622 and four support plates 623. The four mounting rods 622 are rectangularly distributed inside the placement slots 619. The four support plates 623 are arranged on the mounting frame 620 and are slidably engaged with the four mounting rods 622. The bottom of the support plates 623 and the mounting rods 622 is provided with a return spring 624. The detection wheel 621 is rotatably connected to the mounting frame 620. The support plate 623 is provided with a jump sensor 625. The side wall of the mounting frame 620 is provided with a grid end face flatness photoelectric detection device 626 with the detection end facing downward. The photoelectric detection device 626 for grid end face flatness is model CL-3000; the vibration sensor 625 is model CWY-DO-810503.

[0053] More preferably, the bottom of the pressing plate 614 of this application is further provided with a guide groove, and the mounting frame 620 is slidably disposed in the guide groove; a force-measuring spring is provided between the mounting frame 620 and the pressing plate 614, and the compression amount of the force-measuring spring reflects the relative displacement between the mounting frame 620 and the pressing plate 614 in real time; a displacement detection sensor is provided on the pressing plate 614 to detect the compression amount of the force-measuring spring, thereby calculating the contact pressure between the detection wheel 621 and the safety cover 8 in real time; the control system adjusts the downward stroke of the pressing plate 614 according to the contact pressure, so that the detection wheel 621 and the safety cover 8 maintain a constant contact pressure.

[0054] Through this structural coupling, the contact pressure data of the detection wheel can be used to control the pressing stroke, so that the flatness detection is no longer a "passive detection", but forms a closed loop with the secondary pressing correction.

[0055] Two sets of flatness detection components are symmetrically arranged to achieve all-round flatness detection of the 8 end faces of the safety cover, and adopt a dual detection mode of mechanical runout detection + photoelectric end face detection.

[0056] During operation, the pressing component drives the mounting frame 620 to press down, so that the detection wheel 621 fits against the end face of the safety cover 8. The mounting frame 620 achieves vertical sliding cooperation with the support plate 623 through four sets of mounting rods 622. The return spring 624 at the bottom of the support plate 623 provides constant contact pressure for the detection wheel 621, ensuring that the detection wheel 621 always fits against the end face of the safety cover 8.

[0057] When defects such as warping, arching, gaps, or folded corners are present on the end face of the safety cover 8, the detection wheel 621 bounces up and down with the undulations of the end face, and the support plate 623 slides synchronously. The bounce sensor 625 mounted on the support plate 623 collects the bounce displacement data in real time to determine whether the flatness of the end face meets the standard. At the same time, the photoelectric detection device 626 for the flatness of the grid end face on the side wall of the mounting frame 620 performs a full-area scan detection of the entire end face of the safety cover 8 from above, accurately identifying minute defects such as local micro-gaps and slight warping that are difficult to detect by mechanical inspection. The dual detection data are cross-checked to complete the accurate determination of the assembly flatness.

[0058] The combination of mechanical runout detection and photoelectric grid detection makes up for the shortcomings of single detection methods. It can fully cover and identify various minor defects such as misalignment of the safety cover 8, end face warping, local arching, micro gaps, and corner folding, with no blind spots in the detection.

[0059] The reset spring 624 provides constant contact pressure, the detection wheel 621 provides stable contact, and the vibration data is collected accurately, avoiding detection errors caused by uneven pressure and greatly improving detection accuracy.

[0060] The system employs a structural design where the first inspection mechanism 5 and the second inspection mechanism 6 are symmetrically arranged at both ends of the placement slot 11, forming a dual-layer quality control system of dynamic process monitoring and precise finished product inspection. The first inspection mechanism 5 focuses on the dynamic monitoring of displacement and stroke data during the assembly process to predict hidden pressing defects. The second inspection mechanism 6 focuses on the inspection of end face flatness, fitting gaps, and appearance deformation after assembly to identify obvious minor defects. The two mechanisms work synergistically to comprehensively cover various defects in the assembly of the safety cover 8, completely solving the industry pain points of traditional equipment's single quality control, lack of process control, and insufficient final inspection accuracy. This effectively reduces product defect rates and rework costs, ensuring the consistency, sealing performance, and safety of the plug 7 and safety cover 8 assembly.

[0061] Specifically, the automatic feeding robotic arm 2 is equipped with a vacuum adsorption plate 21 for adsorbing the safety cover 8; the automatic feeding robotic arm 2 completes the automated feeding operation of the safety cover 8 through the vacuum adsorption plate 21. The vibrating feeding plate 3 automatically sorts and orients the disordered safety covers 8 to the designated picking position. The robotic arm drives the vacuum adsorption plate 21 to the picking position, and the vacuum negative pressure generates adsorption force to tightly adsorb the surface of the safety cover 8. The negative pressure suction is used to fix the safety cover 8. Then the robotic arm accurately transfers and places the safety cover 8 in the assembly position of the plug 7 to complete the automated feeding process. After the feeding is completed, the negative pressure is released and the safety cover 8 is released to realize continuous cyclic feeding operation.

[0062] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A fully automatic plug safety cover mounting device, characterized in that, Including the mounting rack (1); The mounting frame (1) is provided with an automatic feeding robot arm (2) for adsorbing the safety cover (8) and a vibrating feeding plate (3) for feeding the safety cover (8) on the side. The top of the mounting frame (1) is provided with a placement slot (11) for placing the plug (7). The mounting frame (1) is provided with a fixed limiting mechanism (4) for limiting the plug (7), and the fixed limiting mechanism (4) and the mounting frame (1) are in sliding cooperation. The top of the mounting frame (1) is provided with a first detection mechanism (5) and a second detection mechanism (6) for installing and detecting the safety cover (8). The first detection mechanism (5) and the second detection mechanism (6) are symmetrically arranged on both sides of the placement slot (11).

2. The fully automatic plug safety cover mounting device according to claim 1, characterized in that, The fixed limiting mechanism (4) includes a fixed motor (41), a fixed wheel (42), a fixed plate (43), a fixed shaft (44), two slide rods (45), two connecting springs (46), and three fixed rods (47). The two slide rods (45) are symmetrically arranged inside the mounting frame (1), and the fixing plate (43) is horizontally slidably connected inside the mounting frame (1). The fixing plate (43) and the two slide rods (45) are in sliding cooperation. The two connecting springs (46) are respectively sleeved on the two slide rods (45), and the two ends of the connecting springs (46) are respectively connected between the slide rods (45) and the fixing plate (43); The fixed motor (41) is located inside the mounting frame (1), and the fixed wheel (42) is eccentrically connected to the main shaft of the fixed motor (41); The fixed rotating wheel (42) is provided with an arc groove (48), and the fixed shaft (44) is fixedly connected to the fixed plate (43) and slidably disposed in the arc groove (48); when the fixed rotating wheel (42) rotates, the fixed plate (43) is driven to slide on the two slide rods (45) through the cooperation of the arc groove (48) and the fixed shaft (44); The three fixing rods (47) are horizontally arranged on the fixing plate (43), and the fixing rods (47) are slidably engaged with the mounting frame (1).

3. The fully automatic plug safety cover mounting device according to claim 2, characterized in that, The bottom of the placement slot (11) is provided with a plug slot (12) for the three pins (9) of the plug (7) to be inserted, and the three plug slots (12) correspond to the three fixing rods (47) respectively.

4. The fully automatic plug safety cover mounting device according to claim 1, characterized in that, The first detection mechanism (5) includes a detection frame (51), a drive motor (52), a drive screw shaft (53), a drive slider (54), a bracket (55), and a displacement sensor (56). The detection frame (51) is vertically arranged on the side of the mounting frame (1), and the detection frame (51) is provided with a sliding groove (57). The drive screw shaft (53) is vertically rotatably connected inside the detection frame (51), and the drive motor (52) is located at the top of the detection frame (51) and is connected to the top of the drive screw shaft (53) in a transmission connection. The drive slider (54) is slidably connected in the groove (57) and the drive slider (54) is threadedly connected to the drive screw shaft (53); The bracket (55) is disposed on the side wall of the drive slider (54), and the displacement sensor (56) is mounted on the bracket (55) and is disposed facing the placement slot (11).

5. The fully automatic plug safety cover mounting device according to claim 1, characterized in that, The second testing mechanism (6) includes a testing moving component (60), a testing pressing component (61), and a flatness testing component (62); The detection moving component (60) is disposed on the top of the mounting frame (1), and the detection pressing component (61) is disposed on the detection moving component (60); The detection pressing component (61) and the detection moving component (60) are slidably engaged. The flatness detection component (62) is located at the bottom of the detection pressing component (61). The detection moving component (60) can move the flatness detection component (62) to the position of the placement groove (11).

6. The fully automatic plug safety cover mounting device according to claim 5, characterized in that, The detection moving component (60) includes a moving plate (600) and two synchronous lead screw slides (601). The two synchronous screw slides (601) are symmetrically arranged on the top of the mounting frame (1), and the two ends of the moving plate (600) are respectively connected to the moving ends of the two synchronous screw slides (601); The movable plate (600) has a lifting groove at the middle position and a sliding groove (602) at the top.

7. The fully automatic plug safety cover mounting device according to claim 6, characterized in that, The detection pressing assembly (61) includes a drive cylinder (610), a sliding block (611), a sliding plate (612), a lifting plate (613), a pressing plate (614), and two drive wheels (615). The sliding block (611) is provided with movable sliders (616) on both sides, and the sliding block (611) is slidably connected in the sliding groove (602) through the two movable sliders (616); The drive cylinder (610) is horizontally arranged on the top of the moving plate (600) and the telescopic end of the drive cylinder (610) is connected to the sliding block (611). The sliding plate (612) is vertically arranged at the bottom of the sliding block (611), and the sliding plate (612) is provided with two symmetrically arranged inclined grooves (617). The two drive wheels (615) are symmetrically arranged on the lifting plate (613), and the two drive wheels (615) slide in the two inclined grooves (617) respectively; The pressing plate (614) is horizontally arranged at the bottom of the lifting plate (613). The pressing plate (614) is provided with four sliding rods (618) arranged in a rectangular shape. The sliding rods (618) slide vertically with the moving plate (600). The bottom of the pressing plate (614) is provided with two spaced-apart placement slots (619).

8. The fully automatic plug safety cover mounting device according to claim 7, characterized in that, Two flatness detection components (62) are provided, and the two flatness detection components (62) are respectively arranged in two placement slots (619); Each of the flatness testing components (62) includes a mounting frame (620), a testing wheel (621), four mounting rods (622) and four support plates (623); Four mounting rods (622) are rectangularly distributed inside the placement slot (619), and four support plates (623) are set on the mounting frame (620). The four support plates (623) are slidably engaged with the four mounting rods (622) respectively. The bottom of the support plate (623) and the mounting rod (622) is provided with a return spring (624), and the detection wheel (621) is rotatably connected to the mounting frame (620); The support plate (623) is equipped with a jump sensor (625).

9. The fully automatic plug safety cover mounting device according to claim 8, characterized in that, The mounting frame (620) is provided with a photoelectric detection device (626) for the flatness of the grid end face with the detection end facing downward.

10. The fully automatic plug safety cover mounting device according to claim 1, characterized in that, The automatic feeding robotic arm (2) is equipped with a vacuum adsorption plate (21) for adsorbing the safety cover (8).

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